US Bridges

County Highway over Turtle Creek

Fair

McLean County, North Dakota · 3 East of Washburn · Structure no. 000000028162390

Built
1963
62 years old
Condition
Fair
inspected April 2024
Type
Channel Beam
Concrete
Length
31 ft
1 main span
Daily traffic
220
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over Turtle Creek is a concrete channel beam carrying County Highway over Turtle Creek in McLean County, North Dakota. It was built in 1963, so it is 62 years old, older than the North Dakota average of 48.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 220 vehicles a day, roughly 14% of them trucks, projected to reach 240 by 2039. The structure is 31 ft (9.6 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCounty Highway
CrossesTurtle Creek
Location3 East of Washburn
RouteCounty Highway 2840
Coordinates47.28674, -100.96391
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating45.9 US tons
Inventory rating27.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length31 ft (9.6 m)
Longest span29 ft (8.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2019)
Projected traffic240 by 2039
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Turtle Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is County Highway over Turtle Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does County Highway over Turtle Creek carry?

About 220 vehicles per day (2019 count), of which roughly 14% are trucks.

How long is County Highway over Turtle Creek?

The structure is 31 ft (9.6 m) long with a longest span of 29 ft (8.8 m) and a deck 31 ft wide.

Who owns County Highway over Turtle Creek?

It is owned by the County Highway Agency.